Per 
Photograph from █████ ████████, received from the scene in which SCP-XXXX was found.
Item #: SCP-XXXX
Object Class: Keter
Special Containment Procedures: SCP-XXXX is to be contained within a sealed off chamber at all times. No personnel are allowed to interact, move, or test with SCP-XXXX at all. SCP-XXXX is to be watched 24/7 with motion sensors and 12 guards at the ready encase SCP-XXXX were to break out of its chamber. All guards housing SCP-XXXX have been equipped with nitrogen-filled cannons and are to only be used to contain SCP-XXXX when breach is in process or to defend themselves from SCP-XXXX when it breaches.
Description: SCP-XXXX is a humanoid-ish creature of unknown origin, its body, flesh and skin are made up of a black, liquefied substance which allows it to grow, shrink, expand and shift its appearance by will. The only pieces of solid material attached to SCP-XXXX are thin needle-like rods filled up inside its mouth region and large, rusty nails poking out from separate parts of its body.
SCP-XXXX has shown to display high levels of aggression against any and all living creatures that come into its radius. Despite lacking eyes, ears and nostrils, SCP-XXXX can pinpoint exactly where its target is or where it's coming from, which has lead to the theory of it being able to sense vibrations in the area around them. When SCP-XXXX attacks its victims it will either end with the individual or creature being violently ripped apart or impaled to death by the nails and needles it has on its body, or SCP-XXXX will attempt to latch onto the victim's back, mostly with humans, and tear them open. Once doing this it will break the spinal cord in half and render its victim immobilized. SCP-XXXX will then 'enter' inside of the individual through the giant opening they've made in their back and slowly connect themselves to the nervous system and take control of their new-found skin suit. Although they are capable of gaining a host, SCP-XXXX seems to have difficulties with keeping it alive. The nails on its body usually impale the lungs, stomach, liver, etc when using the host, and the black liquid in its body will begin to suffocate them as well. Once the host has died, SCP-XXXX will exit the corpse and continue on with its usual activities.
SCP-XXXX has shown to also be very durable to any kind of weaponry such as bullets, blunt or sharp objects and explosives. The only known substances that has been shown to prove well against SCP-XXXX are chemical weaponry, or chemicals in general. Chemicals have shown to not only harm it, but have given it changes in moods. Out of most chemicals, Nitrogen has shown to be the most effective against SCP-XXXX, the substance will sometimes leave SCP-XXXX in a 'droopy' state to full on leaving it incapacitated, although these depend on dosages.
Although from the time SCP-XXXX has been in containment, SCP-XXXX has shown no signs of higher intelligence other than killing or attacking anything it has its sights on.
